/*
 * JaLingo, http://jalingo.sourceforge.net/
 *
 * Copyright (c) 2002-2006 Oleksandr Shyshko
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package uwncorrector.centre.gui.actionbinder;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Map;

class RegistratorHelper {
    public void attachListnerToComponent( Method method, Object componentInstance, Object listenerInstance ) throws RegistrationException {
        try {
            method.invoke( componentInstance, listenerInstance );
        } catch ( IllegalAccessException e ) {
            throw new RegistrationException( e );
        } catch ( InvocationTargetException e ) {
            throw new RegistrationException( e );
        }
    }

    public boolean isMethodInListenerMethodToInterfaceNameMap( Map<String, Class> listenerMethodToInterfaceNameMap, Method method ) {
        if ( !listenerMethodToInterfaceNameMap.containsKey( method.getName() ) ) {
            return false;
        }

        if ( method.getReturnType() != void.class ) {
            return false;
        }

        if ( method.getParameterTypes().length != 1 ) {
            return false;
        }

        Class parameterType = listenerMethodToInterfaceNameMap.get( method.getName() );
        if ( !parameterType.equals( method.getParameterTypes()[0] ) ) {
            return false;
        }

        return true;
    }

    public String calculateAddMethodName( String interfaceClassName ) {
        int pointIndex = interfaceClassName.lastIndexOf( "." );

        String calculatedMethodName;

        if ( pointIndex == -1 ) {
            calculatedMethodName = interfaceClassName;
        }

        calculatedMethodName = "add" + interfaceClassName.substring( pointIndex + 1 );
        return calculatedMethodName;
    }

}
